Executive Summary

An Affidavit of Support and Guarantee (AOSG) is a sworn statement by a Philippine-based sponsor (often the Filipina/o partner) stating that she/he will financially support a visiting foreign national, provide lodging, and guarantee compliance with Philippine immigration rules (including departure on time). It is not a visa and does not ensure entry, but it can help at:

Philippine embassies/consulates abroad when the visitor applies for a temporary visitor visa (9[a]); and
Bureau of Immigration (BI) inspection on arrival as secondary proof of purpose of stay and means, especially for visitors with limited funds or longer stays.

Below is everything you need—who may sponsor, what to write, how to notarize in or outside the Philippines, apostille/consularization, taxes/fees, attachments, validity, risks, and a complete model AOSG.

1) When an AOSG Helps—and Its Limits

Useful when:

Your boyfriend’s nationality requires a visa to enter the Philippines (embassy may ask for sponsor’s AOSG).
He is visa-exempt but may be questioned on funds, lodging, or length of stay at the airport.
You want to formalize that you’ll shoulder expenses (board/lodging, domestic travel, emergency medical care, and if needed, repatriation).

Limits:

AOSG does not replace a visa, return/onward ticket, valid passport, or proof of funds.
Entry is always BI discretion.
It is not a bond with the government; it’s a sworn promise that may be considered in assessments and can create civil exposure to counterparties if you explicitly assume costs.

2) Who May Sponsor

Filipino citizen residing in the Philippines (most common).
Permanent resident or long-term visa holder in the Philippines with demonstrable capacity (some posts accept; check their checklist).
Better if the sponsor is the inviting partner/household head where the guest will stay.

3) Core Contents of a Proper AOSG

Include clear, specific, and verifiable facts:

Sponsor details: full name, citizenship, civil status, date/place of birth, address, contact, government ID/TIN/passport no., occupation/employer/income source.
Visitor details: full name (per passport), nationality, passport no., date of birth, relationship to sponsor, visit purpose.
Visit particulars: intended arrival date, length of stay, address(es) in the Philippines, basic itinerary.
Support clause: sponsor will shoulder board/lodging, domestic transport, reasonable daily expenses, and emergency medical costs if needed.
Guarantee clause: sponsor guarantees visitor’s lawful conduct and departure within authorized stay; will assist in extensions if needed; and acknowledges liability to the visitor (and any private service provider) for the costs expressly assumed.
Attachments list (see §6).
Sworn statement (jurat): that facts are true, executed without coercion, and with awareness of penalties for perjury.

Tone: Keep it factual and modest. Avoid promises you can’t keep (e.g., “I guarantee the BI will admit him”). Promise only support and cooperation.

4) Notarization Pathways

A) Sponsor in the Philippines

Bring the final AOSG draft and one government ID to a Philippine notary public.
The notary will administer an oath and notarize under a jurat (affidavits are sworn).
Typical costs: ₱150–₱600 (varies).
Documentary Stamp Tax (DST): Affidavits are generally subject to ₱30 DST (often handled by the notary—ask if they affix the stamp).

B) Sponsor abroad

Two options (choose one):

Before a Philippine Embassy/Consulate
- Execute the AOSG there under consular notarization/acknowledgment.
- This is immediately acceptable in the Philippines.
Before a local (foreign) notary + Apostille
- Notarize in the foreign country and obtain an Apostille (since the Philippines is a party to the Apostille Convention).
- If the country is not in the Apostille system, use Philippine consular authentication.

If the AOSG will be submitted to a Philippine embassy abroad (for a visa), follow that post’s format and authentication instruction; many require apostille or consularization when the sponsor signs outside the Philippines.

5) Using the AOSG (How It’s Presented)

Visa-required nationals: Attach AOSG to the 9(a) visa application along with standard items (invitation letter, sponsor’s IDs/income, visitor’s itinerary, proof of ties, etc.).
Visa-exempt nationals: Visitor carries a printed copy for BI inspection, together with return/onward ticket, proof of funds (cash/cards/bank statements), and accommodation proof (your letter & ID, lease/land title/utility bill).

Reminder: BI may ask for secondary documents (relationship proof—photos/chat logs, sponsor’s ID, etc.) and can limit or deny entry for red flags (false info, derogatory records, no ticket/funds).

6) Attachments That Strengthen an AOSG

Sponsor’s government ID (Philippine passport/UMID/Driver’s License) and proof of address (utility bill/lease/title).
Proof of income/capacity (recent pay slips, COE with salary, bank statement 3–6 months, business permits/tax return for self-employed).
Relationship proof (photos together, communication history, prior travel).
Accommodation proof (title/lease; if hotel/airbnb, booking confirmation).
Visitor’s passport bio page, proposed itinerary, and return/onward ticket (if already bought).
If you promise medical coverage, add proof (HMO/insurance policy or a plan to purchase travel insurance).

7) Validity, Revisions, and Good Practice

Use recent dates: embassies and BI prefer an AOSG issued within 30–90 days of travel.
If travel dates change materially, re-issue with updated dates.
Keep tone professional; avoid slang or casual language.
Keep a soft copy (PDF) and two originals (one for embassy/BI, one for your records).

8) Risks, Liability, and Data Privacy

An AOSG is a sworn statement: false claims can trigger perjury or administrative consequences.
The “guarantee” is not a government bond, but you may incur civil liability to your guest or service providers for expenses you explicitly commit to shoulder.
Redact sensitive numbers in copies given to third parties; disclose only what’s needed.

9) Model Affidavit of Support and Guarantee (for counsel/notary to format)

Republic of the Philippines City/Municipality of __________ ) Province of ____________ ) S.S.

AFFIDAVIT OF SUPPORT AND GUARANTEE

I, [Sponsor’s Full Name], [citizenship], [civil status], born on [DOB] in [POB], presently residing at [complete address], holder of [ID type & no.], employed as [position/company]/[self-employed: business name], after being duly sworn, depose and state that:

I am the [girlfriend/boyfriend/fiancée/partner/friend] of [Visitor’s Full Name], [nationality], passport no. [________], born [DOB]. We have known each other since [year] and have maintained our relationship as evidenced by [brief proof].

Purpose and duration. I am inviting [Visitor] to visit the Philippines from approximately [date] to [date] (or about [__] days) for [tourism/family visit]. He/She will stay at [my residence: full address]/[hotel/airbnb: details].

Support. I undertake to provide or shoulder [board and lodging / local transportation / reasonable daily expenses] during his/her stay, and in case of emergency, to assist with medical care and other necessary expenses, subject to my financial capacity.

Guarantee of compliance. I will ensure that [Visitor] observes Philippine laws and departs within his/her authorized stay or secures proper extensions from the Bureau of Immigration if needed.

Capacity. Attached are copies of my ID(s), proof of address, and proof of income/capacity. Also attached are [itinerary/booking confirmations/relationship proof].

I execute this Affidavit to support [Visitor]’s [temporary visitor visa application/entry inspection] and for any lawful purpose it may serve. I understand this Affidavit does not guarantee visa issuance or admission.

IN WITNESS WHEREOF, I have hereunto set my hand this [date] at [city/province], Philippines.

[Signature over Printed Name of Sponsor]

JURAT

SUBSCRIBED AND SWORN to before me this [date] in [city/province], affiant personally appeared, presenting [ID type & no.], known to me and who acknowledged that the foregoing Affidavit is his/her free and voluntary act and deed. Doc. No. ____; Page No. ____; Book No. __; Series of 20****

(A notary may add a ₱30 Documentary Stamp.)

10) Step-by-Step Checklist

Draft & Prep

Fill the model AOSG with accurate details; keep it concise.
Gather attachments (IDs, address/income proofs, visitor’s passport, itinerary, lodging proof).

Notarize

In PH: Appear before a notary with one government ID; sign and swear.
Abroad: Execute at a Philippine embassy/consulate or notarize locally then obtain an Apostille.

Use

Scan to PDF; send to your boyfriend.
Visa-required: Include with the 9(a) visa application package.
Visa-exempt: Carry for BI inspection, with return ticket, funds, and lodging proof.

Travel Day (Visitor)

Passport (valid 6+ months), return/onward ticket, AOSG, accommodation proof, funds/cards, and travel insurance (recommended).

11) Frequently Asked Questions

Q1: Is an “invitation letter” enough without an AOSG? Sometimes yes, but many posts prefer or require a sworn AOSG because it carries legal weight (sworn and notarized).

Q2: Must the sponsor be employed? No, but you must show capacity (savings, business income, family support). If funds are thin, focus on lodging proof and the visitor’s own funds.

Q3: How long is an AOSG valid? There’s no statutory validity, but use a version dated within 30–90 days of application/arrival.

Q4: Can we name multiple addresses or side trips? Yes—list the primary address and note side trips briefly. Overly vague itineraries can trigger questions.

Q5: Does the AOSG bind me to pay overstay fines if he overstays? No automatic liability to the government—but you promised support. If you specifically undertake repatriation or medical bills, expect moral/civil pressure to honor it.

Bottom Line

A properly prepared and notarized AOSG—with credible attachments—can smooth both visa processing and airport inspection for a foreign boyfriend visiting the Philippines. Draft it carefully, notarize correctly (jurat), add apostille/consularization if executed abroad, attach capacity and lodging proofs, and remember: the AOSG supports but does not guarantee admission.